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The purpose of this paper is to design a component synthesis method to suppress the vibration of the flexible spacecraft, which has the constant amplitude force/moment actuator.

The authors proposed a method to construct constant amplitude of time delay and composite coefficient sequences based on the principles of the component synthesis vibration suppression (CSVS). The associated design strategy of the CSVS torque control is also developed. The dynamic model consisting of a single axis rotating rigid central body and a fixed flexibility panel is used to validate the proposed method. Constraint modal and free modal method are both tested to analyse the natural frequencies of the panel and dynamic properties of rigid–flexible decoupling system, under the conditions of known and unknown frequencies. The feasibility of constructing CSVS control force based on the constraint modal frequency is also analysed.

The proposed method can suppress multistage vibration and has arbitrary order robustness for each order frequencies simultaneously. Simulation results show that only the duration time of the actuator has to be set for the proposed method, reasonable vibration suppression effect can be achieved.

The method can be used in spacecraft, especially flexible spacecraft to suppress the vibration; the approach is convenient for engineering application and can be easily designed.

The authors proposed a method to construct constant amplitude of time delay and composite coefficient sequences based on the principles of the CSVS.

Food waste (FW) reduction, of which household wastage comprises a large fraction, has an important role in promoting the circular economy (CE). This study investigates how certain consumer traits impact household FW, particularly in the face of external shocks.

The authors conducted a qualitative and longitudinal study, spanning three periods in New Zealand. A preliminary model is constructed from the outcomes of a survey with 178 participants. Then, the authors carried out 29 semi-structured interviews to refine the preliminary model and adapt it to the analysis of household waste behavior.

Different segments of consumers have distinct response patterns in successive lockdowns, and these patterns impact household FW reduction and food supply chain (FSC) management. The key findings include (1) for government, quick responses to quash unhelpful rumors help to reduce public concerns around FSC interruption; (2) for retailers, the pandemic has hastened the growth of online shopping; being able to expand the distribution channel in a short time is a critical issue; and (3) for consumers, the experience of lockdown has different impacts on different groups of consumers. This variation of experience may either enhance or exacerbate FW in households.

This paper complements the existing literature on the FSC and contributes to household FW and CE literature by providing a framework that integrates external impacts, consumer segmentation to reflect on waste management, and the possible applications of the proposed framework.

The aim of this study is to report the effect of different content of calcium oxide on the process of electromelting magnesia.

The process of molten magnesia was analyzed by finite element simulation and proved by scanning electron microscope.

The results show that with the increase of CaO content, the maximum temperature appreciation increases from 3,616°C To 3,729°C, showing an approximate nonlinear evolution. Low thermal conductivity and low specific heat of CaO result in higher temperature. With the increase of CaO content and temperature, the maximum flow velocity of MgO slag increases from 0.043 to 1.34 mm/s. Under different initial CaO contents, the distribution trend of CaO volume fraction is basically the same, and the CaO volume fraction is evenly distributed between 50 and 225 mm in the furnace.

The influence of different contents of impurity calcium oxide on the process of electromelting magnesia was analyzed and a theoretical system was established.

Artificial fruit ripening is hazardous to mankind. In the recent past, artificial fruit ripening is increasing gradually due to its commercial benefits. To discriminate the type of fruit ripening involved at the vendors’ side, there is a great demand for on-sight ethylene detection in a nondestructive manner. Therefore, this study aims to deal with a comparison of various laboratory and portable methods developed so far with high-performance metrics to identify the ethylene detection at fruit ripening site.

This paper focuses on various types of technologies proposed up to date in ethylene detection, fabrication methods and signal conditioning circuits for ethylene detection in parts per million and parts per billion levels. The authors have already developed an infrared (IR) sensor to detect ethylene and also developed a lab-based setup belonging to the electrochemical sensing methods to detect ethylene for the fruit ripening application.

The authors have developed an electrochemical sensor based on multi-walled carbon nanotubes whose performance is relatively higher than the sensors that were previously reported in terms of material, sensitivity and selectivity. For identifying the best sensing technology for optimization of ethylene detection for fruit ripening discrimination process, authors have developed an IR-based ethylene sensor and also semiconducting metal-oxide ethylene sensor which are all compared with literature-based comparable parameters. This review paper mainly focuses on the potential possibilities for developing portable ethylene sensing devices for investigation applications.

The authors have elaborately discussed the new chemical and physical methods of ethylene detection and quantification from their own developed methods and also the key findings of the methods proposed by fellow researchers working on this field. The authors would like to declare that the extensive analysis carried out in this technical survey could be used for developing a cost-effective and high-performance portable ethylene sensing device for fruit ripening and discrimination applications.

Using Chinese A-share listed firms between 2007 and 2020 with 21,380 observations, we aim to examine the impact of cross-ownership on firms’ innovation output and explore the underlying mechanisms.

To test the influence of cross-ownership on firms’ innovation output, this paper constructs an ordinary least square regression model. The explained variables are firms’ innovation output, including the total number of patent applications (Apply) and the number of invention patent applications (Apply_I). Considering the long period of patent R&D, we take the value of the explained variables in the following year for regression. Cross-ownership (Cross) is the explanatory variable; Control is the control variable; and ε is the regression residual term.

We find that cross-ownership significantly promotes corporate innovation output, indicating that cross-owners play an important role in “collaborative governance.” This finding remains unchanged after conducting a series of robustness tests. We also find that cross-ownership contributes to innovation output mainly through two plausible channels: the relaxation of financing constraints and reducing both types of agency costs. Further analysis shows that cross-ownership has a more pronounced influence on innovation output in those firms with higher equity restriction ratios and facing more competitive markets. Moreover, cross-ownership has a profound impact on firms’ innovation quality and innovation efficiency, thereby increasing firm value.

This study provides important policy implications. First, cross-owners should actively play their resource and supervision advantages to improve firms’ long-term development capability through the “collaborative governance” effect. Second, listed companies in China should be fully aware of the value of the cross-ownership and use the cross-ownership as a bridge to strengthen the cooperative relationship with firms in the same portfolio. Meanwhile, they need to pay attention to cross-ownership’s “collaborative governance” effect to provide an impetus for the healthy development of enterprises. Finally, government regulators should maintain appropriate supervision of the cross-ownership linkage in the market.

Our findings show that cross-ownership significantly contributes to firms’ innovation output, indicating that cross-owners play the role of “collaborative governance.” While paying attention to the collusion effect of the cross-ownership, they shall not ignore its governance effect, for example, the promotion effect on the innovation level. Government regulators should appropriately supervise the cross-ownership linkage, which is conducive to maintaining the market order and driving the healthy development of the capital market.

Using a comprehensive sample from developed and emerging economies, this study aims to examine whether foreign institutional investors (FIIs) enhance the value of excess cash by constraining the potential self-appropriating managerial propensity related to its inefficient utilization.

This study uses a large panel data set of firms from 32 non-US countries from 2007 to 2018. Using data from COMPUSTAT Global and S&P Capital IQ, this study uses ordinary least squares regression with year- and firm-fixed effects for the baseline analysis. In addition, two-stage least squares with instrumental variable regression and propensity score matching approaches were used to address the potential endogeneity.

This study shows that FIIs significantly increase the value of excess cash holdings. The authors also found that the positive impact of FIIs is more significant when investors come from common-law countries with better governance and investor protection. Furthermore, in countries and firms with weaker governance controls, the relationship between FIIs and the value of excess cash is stronger, consistent with the institutional monitoring hypothesis. Collectively, the findings imply that FIIs are advantageous to investees because they effectively promote the efficient deployment of corporate resources.

Collectively, the findings of this study imply that FIIs are advantageous to investees because they effectively promote the efficient deployment of corporate resources.

This study offers new evidence on how FIIs impact the value of excess cash in an international setting. In addition, it highlights the significance of the legal origin of institutional investors’ home country and the governance quality of host countries and investee firms in influencing the effect of foreign institutional monitoring on the value of excess cash.

This paper explores current teaching and learning practices, benefits and challenges in the implementation of Internationalization at Home (IaH) in higher education.

The study follows a systematic review (SR) protocol in accordance with the PRISMA Statement, covering published research from 2018 to 2022. Through this process, we identified 58 peer-reviewed manuscripts meeting our inclusion criteria. We examined disciplines, locations of IaH, objectives pursued, modality of the IaH implementation, activities and resources used. Benefits and challenges were also analysed.

The SR reveals a growing adoption of IaH, employing various technologies and interdisciplinary methods to foster cross-cultural competence. It emphasizes diverse teaching activities and resources, aligning with digitalization trends. While IaH brings benefits like improved intercultural sensitivity, collaboration and skills development, it also faces challenges in language, technical, personal, pedagogical and organizational aspects, highlighting its complexity.

Our search focused on research from 2018 to 2022, potentially missing earlier trends, and excluded grey literature due to quality concerns. The SR emphasizes online collaborative efforts in IaH, signalling a shift to digital internationalization. Institutions should invest in supporting such practices aided by strategic university alliances. A critical approach to “Global-North” collaborations is urged, promoting geographically inclusive IaH initiatives.

This study responds to the call for critical analysis on concrete examples of IaH. Through a systematic review, it explores recent teaching and learning practices, with a particular focus on the latest technological advancements. The study specifies learning objectives and identifies relevant tools for implementing IaH initiatives.

The purpose of this study is to examine the impact of corporate governance (CG) on chief executive officer compensation (CEO COMP) and pay–performance relationship (PPR) in Indian listed firms.

A sample of 196 companies listed on the S&P BSE 500 (Standard and Poor's Bombay Stock Exchange 500) Index has been analyzed using the panel (random effects) regression technique over the period 2010–2019. In addition, the system GMM technique was used to deal with the endogeneity issue.

The study found that block ownership and ownership concentration negatively impact COMP measures and PPR. Board size also had a negative direct and moderating impact on CEO COMP; however, the linkages were generally insignificant, especially for total pay. Similarly, outsider blockholders were found to be playing an insignificant role. Further, board independence positively influences COMP levels and PPR, though the results were mixed with respect to significance. Finally, CEO duality positively and significantly influences CEO COMP and PPR. A comparison before and after the new Indian Companies Act 2013 also revealed similar results, particularly in the after period. It suggests that the new legislative initiative was not effective enough in improving the CG and, hence, the alignment of pay with performance.

This study investigates the direct and moderating impact of CG on CEO COMP in the context of emerging economy India. Further, it makes a comparison before and after the introduction of the new governance reform, that is, the Indian Companies Act, 2013. Moreover, providing support to the entrenchment effect, the study reveals that large shareholders expropriate minority shareholders’ wealth by not aligning CEO pay with performance, making agency problems graver in emerging economies like India.

The purpose of this study is to prepare Polystyrene grafted with Zeolite Y (Zeosty) for Uranyl ion [U(VI)] adsorption from aqueous solution. The adsorption mechanism has been explained by studying kinetic, isothermal and thermodynamic models.

Polystyrene was grafted with Zeosty by a simple hydrothermal technique. Zeosty was characterized by different techniques such as X-ray diffraction, scanning electron microscope, energy dispersive X-ray and Infrared spectroscopy to confirm its structure and its molecular composition. Zeosty was used for U(VI) adsorption from an aqueous solution in a series of batch experiments. The effects of pH, contact time, initial U(VI) concentration and temperature on the adsorption process were investigated.

The results showed that the adsorption of U(VI) on the prepared reached equilibrium at pH 6 with a removal efficiency of 98.9%. Adsorption kinetics and isotherms models are studied on the experimental data to estimate the mechanism of the adsorption reaction was chemisorption and homogenous reaction. The activity of Zeosty increased at high temperatures, resulting in the adsorption capacity increase. Thermodynamic parameters ΔGo, ΔHo and ΔSo indicate that the adsorption processes are spontaneous and endothermic. Zeosty has an effective surface and could be considered a valuable adsorbent for U(VI) removal from aqueous waste. A comparison study proves that the new adsorbent has high effective behavior in the adsorption process, and it is considered a new reliable adsorbent for U(VI) removal from wastewater.

This study is complementary to the previous study using the same technique to prove that the effective fine particle adsorbents need solid support to enhance their absorption capacities.

This study aims to examine the influence of corporate governance (CG) and corporate social responsibility (CSR) on firm value while accounting for the impact of information asymmetry.

This empirical analysis is based on 1,079 observations from 83 listed Indonesian firms for the period 2007–2019. The authors applied simultaneous equation models with ordinary least squares and two-stage least squares.

The authors present empirical evidence of CG mechanisms that significantly contribute to low levels of CSR. Moreover, the authors identify a significant impact of information asymmetry on the relationship between CG, CSR and firm value.

The results show that information asymmetry, CG and CSR do not necessarily result in improved firm value across boards. Moreover, the employment of a nonlinear Cobb–Douglas-type function indicated diminishing marginal returns.

The findings can help policymakers in developing countries in improving the monitoring and supervisory roles of CG mechanisms to provide more support to CSR, increasing regulatory pressures for improved CSR performance and reducing information asymmetry by adopting a standardized CSR reporting scheme.

The suggested implications can contribute to more sustainable practices among Indonesian-listed firms as well as improving relationships with consumers and stakeholders toward the practice of CSR.

The adoption of a comprehensive CSR measurement tool to examine the value of CSR contributes to the extant literature, along with examining the impact of information asymmetry on the relationship between CG, CSR and firm value in a developing country context.